Yako Hoshino

Yurara's classmate, Yakou Hoshino is always calm and collected. He can sense spirits and has the ability to make protective barriers through water. Despite being so smart, he's completely out of touch with his emotions and is often surprised by them.

When he was little a spirit tried to drown him in a river. He managed to use his powers to escape, but has been terrified of water since.